Features: Made of good quality ABS material, waterproof, solid, durable and wear-resistant. Multi-functional, can be used in many places, for pet selfie, locating, looking for things, etc. Support Bluetooth connection with mobile phone for real time locating. It is mainly used to locate and prevent lost of your pets. It is also widely used in handbags, purses, cars, children, suitcases, search for objects, alarm, selfies or others. Compatibility for Android system with Bluetooth 4.0 smartphone (for Android 4.3 version and up-grade version). Function: Support Bluetooth connection with mobile phone and two-way searching function, which can connect with 10 pet GPS at most at the same time. Under connecting state, when pet anti-lost device go out of the monitoring area, the phone and the device will alarm at the same time. You can check the map location on your mobile phone when the anti-lost device is disconnected. Providing avoiding interruption function, which can be st to mute in a certain period of time to prevent interruption at work and other important hours. Control the shooting function of mobile phone through the anti-lost device and remote control self-timer. Specification: Material: ABS Optional Color: Pink, Blue, White, Black, Green Battery: CR2032 Lithium Battery (Battery not included) Bluetooth: Bluetooth 4.0 Mobile Phone system: for Android system with Bluetooth 4.0 smartphone (for Android 4.3 version and up-grade version) Size (LxW): Approx. 5x3 cm/ 1.97x1.18 inch Packing List: 1 x User Manual 1 x Pet GPS Locator Note: The effective distance of this anti-lost device can be up to 10 meters in the open range. The GPS is not very accurate, it can only locate to the street or block. Please do not buy it if you can not accept it.